Speaker box



FIG. 1 is a front top right perspective view of my new design for a speaker box;

FIG. 2 is a is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a right side elevation view thereof, the left side being a mirror image thereof. 

The ornamental design for “speaker box,” as shown and described. 